SU1423935A1 - Device for taking samples of soil pore fluid - Google Patents

Abstract

The invention relates to hydrogeological studies, in particular, to devices for sampling soil and ground pore solutions. The purpose of the invention is to improve the accuracy of measurements and expand the capabilities of the device. The device contains a semipermeable ceramic probe 1 with a fortified inside glass 2 with holes made of a material inert to water, a connecting tube 3 with a stopper, a lifting tube 4 lowered into the cup 2, an air-borne tube 5, clamps 6, a pump for creating a vacuum or pressure, pressure gauge 7 and catchment vessel 8 with a rubber stopper. 1 il. c (LE 4 to oo (x) oo sd

Description

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The invention relates to hydrogeological studies, in particular, to devices for sampling soil and soil pore solutions. The purpose of the invention is to improve the measurement accuracy, expanding the possibility of the device.

The drawing shows the proposed device for the normalized selection of peer solution.

The device consists of a porous semipermeable ceramic probe 1, a glass 2 with holes, made of a material inert to water and attached to the probe in its upper part, a connecting tube 3 with a lid, a water lifting tube 4, an airway tube 5, clamps 6, a pressure gauge 7 for measuring the pressure difference in probe 1 and tube. 4, created using a hand pump, and a catchment vessel 8 with a rubber stopper.

I To set the normalized amount of the pore solution, the device is set to the required depth into the soil. By tamponing, a good contact is created.

in the vicinity of probe 1 with soil. After saturating the dry porous ceramic with the moisture of the soil in the probe using a vacuum pump, a vacuum of about 80-95 kPa is created. Under the action of a dilution, the pore solution accumulates inside the probe 1 and through

The holes enter the cup 2. At the time of sampling the pore solution, the device depressurizes, the soil absorbs the excess solution from the probe, and remains in cup 2. only the normalized amount of the solution that is pumped up or diluted by the lifting tube 4 into the catchment vessel 8. The use of the invention expands the capabilities of the device and improves the accuracy of the research due to the fact that a normalized amount of the pore solution is obtained at a great depth and the violation of the humidity regime is eliminated} in the installation zone of the probe.

Claims (1)

Invention Formula The device DP sampling soil-pore solution, which includes a semi-permeable ceramic probe, a connecting tube with a stopper, a water-lifting tube, a water-breathing tube, a pump for creating Neither vacuum or pressure in the probe and the tube and pressure gauge, characterized in that, in order to expand the device's capabilities and improve the measurement accuracy, it is equipped with a cup installed in the probe, made with holes and fixed in the upper part of the probe, and a lifting pipe inside the glass.